Citreomontanin
Citreomontanin (Citreomontanine) (Compound 3), an α‑Pyrone polyketide, is an intermediate of Citreoviripyrone A. Citreomontanin can be isolated from the mycelium of endophytic Penicillium sp. in Catharanthus roseus. Citreoviripyrone A has a moderate inhibitory activity on HCT116 cells growth[1].